Malicious PDF — malware analysis report

Static analysis result for SHA-256 2951bb0f96a01020…

MALICIOUS

PDF

43.6 KB Created: 2020-08-04 13:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47e72d0f15e49bff2766b0f34738966e SHA-1: 6b31712f3ac17c4636347316032cdde2f296d997 SHA-256: 2951bb0f96a01020cdf537142c937ecf58864e9a28d1b2c4dca6ec48355ef2b6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at https://ttraff.ru/pify. The document body, though partially corrupted, suggests a lure related to 'assistant loco pilot exam paper 2020 pdf', indicating a phishing or social engineering attempt. The presence of a link farm further supports the malicious intent of distributing traffic to potentially harmful sites.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=assistant+loco+pilot+exam+paper+2020+pdf
    • http://files.simplylavishskin.com/uploads/1/3/1/6/131606331/vikagosuribuw-jiromukisuv.pdf
    • http://files.unisonnorpol.org.uk/uploads/1/3/1/4/131438245/wosexoxijexexadit.pdf
    • http://files.in2improv.org/uploads/1/3/0/9/130969910/kojuwodela.pdf
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/da_2166_8_1_example.pdf
    • https://cdn.shopify.com/s/files/1/0433/1791/9909/files/rogogituxodamudixel.pdf
    • https://cdn.shopify.com/s/files/1/0431/4677/2629/files/91224925292.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5804/files/munomitezovojope.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/salivarinipusoji.pdf
    • https://cdn.shopify.com/s/files/1/0429/5534/1977/files/josaxadawumuki.pdf
    • https://cdn.shopify.com/s/files/1/0434/3860/4450/files/basapitevovuzuj.pdf
    • https://cdn.shopify.com/s/files/1/0439/2416/0667/files/robufuzoloxijosekarimuva.pdf
    • https://cdn.shopify.com/s/files/1/0433/2892/9960/files/bugox.pdf
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/66853186311.pdf
    • https://cdn.shopify.com/s/files/1/0428/6326/3910/files/3408684993.pdf
    • https://cdn.shopify.com/s/files/1/0431/6187/8687/files/tinisopoxu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069c6.bin
dcd7ebc60e2015a53b0c48def62e14e1ea0f28ce73d372a9172d3b0287674998		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69C6 5632 bytes
font_01_sfnt_off00007cdf.bin
1dd8499686954e6a68c1bd535233921890ac9560ad7cb912f2fce982424c30b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDF 10696 bytes

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